A class of 25 students includes 12 boys. Does the ratio of girls to students represent a fraction? Does the ratio of boys to girls represent a fraction? How do you know? I need help with this

For which rational expression is -2 an excluded value of x?

The expression 6x2 gives the surface area of a cube, and the expression x3 gives the volume of a cube, where x is the length of one side of the cube. find the surface area and the volume of a cube with a side length of 6m

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?